Testing windings on a single phase AC motor

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Mar 19, 2008
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KTM 950 Adventure
WD Guru's

I know its not bike related, but since there is such a wealth of knowledge on this forum, I thought I would try my luck.

I am currently diagnosing why my irrigation pump turns slowly (despite being free to rotate) before tripping out on overcurrent.

Its a simple single phase 220V capacitor run motor with the cap in the circuit full time (no centrifugal switch or other such gubbins)
I tested the cap, and its a bit low at 16 uf for its rated 20uf +-5% but I don't think this is the fault.
That leaves the windings, trouble is, I am not sure what the typical winding resistances should be.....

A google search hasn't brought me much joy

Any tips would be greatly appreciated.

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